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<FONT color="green">001</FONT>    package com.google.code.guava.beans;<a name="line.1"></a>
<FONT color="green">002</FONT>    <a name="line.2"></a>
<FONT color="green">003</FONT>    import static com.google.common.base.Preconditions.checkArgument;<a name="line.3"></a>
<FONT color="green">004</FONT>    import static com.google.common.base.Preconditions.checkNotNull;<a name="line.4"></a>
<FONT color="green">005</FONT>    <a name="line.5"></a>
<FONT color="green">006</FONT>    import java.beans.PropertyDescriptor;<a name="line.6"></a>
<FONT color="green">007</FONT>    <a name="line.7"></a>
<FONT color="green">008</FONT>    import com.google.code.guava.reflect.Classes;<a name="line.8"></a>
<FONT color="green">009</FONT>    import com.google.common.base.Function;<a name="line.9"></a>
<FONT color="green">010</FONT>    import com.google.common.collect.ImmutableList;<a name="line.10"></a>
<FONT color="green">011</FONT>    import com.google.common.collect.Lists;<a name="line.11"></a>
<FONT color="green">012</FONT>    <a name="line.12"></a>
<FONT color="green">013</FONT>    /**<a name="line.13"></a>
<FONT color="green">014</FONT>     * This represents a bean property bound to an owner instance. All get() and<a name="line.14"></a>
<FONT color="green">015</FONT>     * set() operations use the bean property's Getter and / or Setter and invoke<a name="line.15"></a>
<FONT color="green">016</FONT>     * them on the owner instance.<a name="line.16"></a>
<FONT color="green">017</FONT>     * <a name="line.17"></a>
<FONT color="green">018</FONT>     * @param &lt;T&gt;<a name="line.18"></a>
<FONT color="green">019</FONT>     *            the generic type<a name="line.19"></a>
<FONT color="green">020</FONT>     */<a name="line.20"></a>
<FONT color="green">021</FONT>    public final class BeanProperty&lt;T&gt; extends BaseProperty&lt;T&gt;{<a name="line.21"></a>
<FONT color="green">022</FONT>    <a name="line.22"></a>
<FONT color="green">023</FONT>        /**<a name="line.23"></a>
<FONT color="green">024</FONT>         * Provides a type safe generic view of this property. Usage:<a name="line.24"></a>
<FONT color="green">025</FONT>         * <a name="line.25"></a>
<FONT color="green">026</FONT>         * &lt;pre&gt;<a name="line.26"></a>
<FONT color="green">027</FONT>         * BeanProperty&lt;?&gt; someProperty = // initialize this somehow<a name="line.27"></a>
<FONT color="green">028</FONT>         * if(String.class.equals(someProperty.getType())){<a name="line.28"></a>
<FONT color="green">029</FONT>         *     someProperty.asType(String.class).setValue("Hello World");<a name="line.29"></a>
<FONT color="green">030</FONT>         * }<a name="line.30"></a>
<FONT color="green">031</FONT>         * &lt;/pre&gt;<a name="line.31"></a>
<FONT color="green">032</FONT>         * <a name="line.32"></a>
<FONT color="green">033</FONT>         * @param &lt;S&gt;<a name="line.33"></a>
<FONT color="green">034</FONT>         * @param targetType<a name="line.34"></a>
<FONT color="green">035</FONT>         *            the target class<a name="line.35"></a>
<FONT color="green">036</FONT>         * @return this property, casted to the supplied generic type<a name="line.36"></a>
<FONT color="green">037</FONT>         * @exception IllegalArgumentException<a name="line.37"></a>
<FONT color="green">038</FONT>         *                if the supplied type is not compatible with<a name="line.38"></a>
<FONT color="green">039</FONT>         *                {@link #getType()}<a name="line.39"></a>
<FONT color="green">040</FONT>         */<a name="line.40"></a>
<FONT color="green">041</FONT>        @SuppressWarnings("unchecked" /* checked at runtime */)<a name="line.41"></a>
<FONT color="green">042</FONT>        public &lt;S&gt; BeanProperty&lt;S&gt; asType(final Class&lt;S&gt; targetType){<a name="line.42"></a>
<FONT color="green">043</FONT>            checkArgument(targetType.isAssignableFrom(getType())<a name="line.43"></a>
<FONT color="green">044</FONT>                          || Classes.equivalentWhenAutoBoxing(targetType, getType()),<a name="line.44"></a>
<FONT color="green">045</FONT>                "Property %s is not compatible with return type %s",<a name="line.45"></a>
<FONT color="green">046</FONT>                getName(),<a name="line.46"></a>
<FONT color="green">047</FONT>                getType());<a name="line.47"></a>
<FONT color="green">048</FONT>            return (BeanProperty&lt;S&gt;) this;<a name="line.48"></a>
<FONT color="green">049</FONT>        }<a name="line.49"></a>
<FONT color="green">050</FONT>    <a name="line.50"></a>
<FONT color="green">051</FONT>        private static final class BeanPropertyFunction implements<a name="line.51"></a>
<FONT color="green">052</FONT>        Function&lt;PropertyDescriptor, BeanProperty&lt;?&gt;&gt;{<a name="line.52"></a>
<FONT color="green">053</FONT>    <a name="line.53"></a>
<FONT color="green">054</FONT>            public static Function&lt;? super PropertyDescriptor, ? extends BeanProperty&lt;?&gt;&gt; forBean(<a name="line.54"></a>
<FONT color="green">055</FONT>                final Object bean){<a name="line.55"></a>
<FONT color="green">056</FONT>                return new BeanPropertyFunction(bean);<a name="line.56"></a>
<FONT color="green">057</FONT>            }<a name="line.57"></a>
<FONT color="green">058</FONT>    <a name="line.58"></a>
<FONT color="green">059</FONT>            private final Object bean;<a name="line.59"></a>
<FONT color="green">060</FONT>    <a name="line.60"></a>
<FONT color="green">061</FONT>            private BeanPropertyFunction(final Object bean){<a name="line.61"></a>
<FONT color="green">062</FONT>                this.bean = bean;<a name="line.62"></a>
<FONT color="green">063</FONT>            }<a name="line.63"></a>
<FONT color="green">064</FONT>    <a name="line.64"></a>
<FONT color="green">065</FONT>            public BeanProperty&lt;?&gt; apply(final PropertyDescriptor descriptor){<a name="line.65"></a>
<FONT color="green">066</FONT>                return new BeanProperty&lt;Object&gt;(<a name="line.66"></a>
<FONT color="green">067</FONT>                    bean, Properties.getPropertyfromDescriptor(descriptor));<a name="line.67"></a>
<FONT color="green">068</FONT>            }<a name="line.68"></a>
<FONT color="green">069</FONT>        }<a name="line.69"></a>
<FONT color="green">070</FONT>    <a name="line.70"></a>
<FONT color="green">071</FONT>        /**<a name="line.71"></a>
<FONT color="green">072</FONT>         * Return a list of all properties of a given bean.<a name="line.72"></a>
<FONT color="green">073</FONT>         * <a name="line.73"></a>
<FONT color="green">074</FONT>         * @exception RuntimeException<a name="line.74"></a>
<FONT color="green">075</FONT>         *                if introspection fails<a name="line.75"></a>
<FONT color="green">076</FONT>         * @exception NullPointerException<a name="line.76"></a>
<FONT color="green">077</FONT>         *                if bean is null<a name="line.77"></a>
<FONT color="green">078</FONT>         */<a name="line.78"></a>
<FONT color="green">079</FONT>        public static ImmutableList&lt;BeanProperty&lt;?&gt;&gt; listProperties(<a name="line.79"></a>
<FONT color="green">080</FONT>            final Object bean){<a name="line.80"></a>
<FONT color="green">081</FONT>    <a name="line.81"></a>
<FONT color="green">082</FONT>            return ImmutableList.copyOf(Lists.transform(<a name="line.82"></a>
<FONT color="green">083</FONT>                Introspection.listPropertyDescriptors(checkNotNull(bean)),<a name="line.83"></a>
<FONT color="green">084</FONT>                BeanPropertyFunction.forBean(bean)<a name="line.84"></a>
<FONT color="green">085</FONT>            ));<a name="line.85"></a>
<FONT color="green">086</FONT>        }<a name="line.86"></a>
<FONT color="green">087</FONT>    <a name="line.87"></a>
<FONT color="green">088</FONT>        private final Object owner;<a name="line.88"></a>
<FONT color="green">089</FONT>    <a name="line.89"></a>
<FONT color="green">090</FONT>        private final Property&lt;T&gt; property;<a name="line.90"></a>
<FONT color="green">091</FONT>    <a name="line.91"></a>
<FONT color="green">092</FONT>        BeanProperty(final Object owner, final Property&lt;T&gt; property){<a name="line.92"></a>
<FONT color="green">093</FONT>            this.owner = owner;<a name="line.93"></a>
<FONT color="green">094</FONT>            this.property = property;<a name="line.94"></a>
<FONT color="green">095</FONT>        }<a name="line.95"></a>
<FONT color="green">096</FONT>    <a name="line.96"></a>
<FONT color="green">097</FONT>        @Override<a name="line.97"></a>
<FONT color="green">098</FONT>        public String getName(){<a name="line.98"></a>
<FONT color="green">099</FONT>            return property.getName();<a name="line.99"></a>
<FONT color="green">100</FONT>        }<a name="line.100"></a>
<FONT color="green">101</FONT>    <a name="line.101"></a>
<FONT color="green">102</FONT>        @Override<a name="line.102"></a>
<FONT color="green">103</FONT>        public Class&lt;T&gt; getType(){<a name="line.103"></a>
<FONT color="green">104</FONT>            return property.getType();<a name="line.104"></a>
<FONT color="green">105</FONT>        }<a name="line.105"></a>
<FONT color="green">106</FONT>    <a name="line.106"></a>
<FONT color="green">107</FONT>        /**<a name="line.107"></a>
<FONT color="green">108</FONT>         * Return the bean property value.<a name="line.108"></a>
<FONT color="green">109</FONT>         */<a name="line.109"></a>
<FONT color="green">110</FONT>        public T getValue(){<a name="line.110"></a>
<FONT color="green">111</FONT>            return property.getValueFromGetter(owner);<a name="line.111"></a>
<FONT color="green">112</FONT>        }<a name="line.112"></a>
<FONT color="green">113</FONT>    <a name="line.113"></a>
<FONT color="green">114</FONT>        /**<a name="line.114"></a>
<FONT color="green">115</FONT>         * {@inheritDoc}<a name="line.115"></a>
<FONT color="green">116</FONT>         */<a name="line.116"></a>
<FONT color="green">117</FONT>        @Override<a name="line.117"></a>
<FONT color="green">118</FONT>        public boolean isReadable(){<a name="line.118"></a>
<FONT color="green">119</FONT>            return property.isReadable();<a name="line.119"></a>
<FONT color="green">120</FONT>        }<a name="line.120"></a>
<FONT color="green">121</FONT>    <a name="line.121"></a>
<FONT color="green">122</FONT>        /**<a name="line.122"></a>
<FONT color="green">123</FONT>         * {@inheritDoc}<a name="line.123"></a>
<FONT color="green">124</FONT>         */<a name="line.124"></a>
<FONT color="green">125</FONT>        @Override<a name="line.125"></a>
<FONT color="green">126</FONT>        public boolean isWriteable(){<a name="line.126"></a>
<FONT color="green">127</FONT>            return property.isWriteable();<a name="line.127"></a>
<FONT color="green">128</FONT>        }<a name="line.128"></a>
<FONT color="green">129</FONT>    <a name="line.129"></a>
<FONT color="green">130</FONT>        /**<a name="line.130"></a>
<FONT color="green">131</FONT>         * Set the bean property value.<a name="line.131"></a>
<FONT color="green">132</FONT>         */<a name="line.132"></a>
<FONT color="green">133</FONT>        public void setValue(final T value){<a name="line.133"></a>
<FONT color="green">134</FONT>            property.setValueWithSetter(owner, value);<a name="line.134"></a>
<FONT color="green">135</FONT>        }<a name="line.135"></a>
<FONT color="green">136</FONT>    <a name="line.136"></a>
<FONT color="green">137</FONT>    }<a name="line.137"></a>




























































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